Tribological characteristics of polyimide composites in hydrogen environment
Tribological characteristics of polyimide composites in hydrogen environment
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DOI：
10.1016/j.triboint.2015.06.001
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发表时间：
2015-12
影响因子：
6.2
通讯作者：
G. Theiler;T. Gradt
中科院分区：
文献类型：
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作者：
G. Theiler;T. Gradt
以天然石墨和合成石墨为填充材料，研究了氢环境对聚酰亚胺（PI1和PI2）复合材料摩擦磨损性能的影响。对AISI 52100钢进行了滑动试验，并对磨损表面和转移膜进行了SEM、EDX和红外光谱分析。结果表明，聚酰亚胺的化学结构对其摩擦学性能有重要影响。PI2的摩擦在所有环境中都保持相当稳定，而PI1在没有任何润滑剂的情况下在氢气中表现出非常低的摩擦。石墨的润滑性在氢气中比在潮湿的空气中更有效。
The influence of hydrogen environment on the friction and wear behavior of polyimide (PI) composites was investigated for two different PI-types (PI1 and PI2) filled with natural or synthetic graphite. Sliding tests were run against AISI 52100 steel and the worn surfaces as well as the transfer film were analyzed by means of SEM, EDX and Infrared Spectroscopy. Results indicate that the chemical structure of the polyimide has a major influence on the tribological behavior. While the friction of PI2 remains rather stable in all environments, PI1 showed very low friction in hydrogen without any lubricant. The lubricity of graphite was found to be more effective in hydrogen than in moist air.